Felt-covered suction couch-cylinder.



E. V. PHEL'PS v FELT COVERED SUCTION COUCH CYLINDER. APPLICATQON FILED AUG-4. 1915. 1,241,272. Pantedsept. 25, 1917.

UNITED sTATEs PATENT oEEioE.

`EDWARD V. PHELPS, OF NASI-IUA, NEW HAMPSHIRE, ASSIG'NOR TO IMPROVED PAPER MACHINERY COMPANY, or iviAiNE.

NASIIUA, NEW HAMPSHIRE, A CORPORATION OF FELT-COVERED SUCTION COUCI-I-CYIINDER.

1 T0 all whom t may concern:

l Be it known that I, EDWARD V. PHELPs, a citizen of the United States, and a resident of Nashua, county of Hillsborough, and State of New Hampshire, have invented an Improvement in Felt-Covered Suction Coucli-Cylinders, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing the arts. i f

p lThis invention relates to improvements in rolls which, in certain aspects of the invention, may be used for various purposes but which are .particularly designed and adapted for use as couch rollsfor paper making and pulp treating machinery:

In order that the principle of the invention may readily be understood, I have disclosed a single embodiment thereof in the accompanying drawing, wherein:

. Figure 1 is a. side elevation partially in section and with the central portion broken away of a couch roll embodying my invention;

Fig. 2 is a longitudinal vertical central section thereof.

Fig. 3 is an end elevation thereof; and

Fig. 4 is a vertical transverse section thereof. c

These rolls are commonly formed from a rigid or semi-rigid core with an applied surface in the form of a relatively yielding and more or less frictional material. In the construction of these rolls the surface is commonly applied by winding on the core a covering composed of one or more strips of suitable material, suoli, for example, as

c felt.

Referring more particularly to the drawings and to the single illustrative enibodis ment of the invention therein shown` Ihave therein represented the shaft 1 supported in suitable divided bearings 2*3 of any suitable construction. Said bearings may be supported in any desired manner upon the frame or structure of the paper-making or pulp-feeding machinery, as, for example, upon beams 4, 5 not herein necessary more fully to describe or disclose.

In the represented embodiment of my iiivention, to the specific details of form or relative arrangement of parts of which I am in no wise limited, except as claimed, I have represented the shaft 1 as having fast 4entire length of the couch roll.

Specification of Letters Patent. i Patentgd Spt, 25, 1917 Application filed August 4, 1915. Serial No. 43,677.

thereon spiders 6, 7 of which any desired number may be employed. In Fig. 4 I have represented the peripheral surfaces 8 of said spiders as polygonous in form thus forming salient angles 9. Said spiders may, however, be given any other suitable peripheral form.

The shell of the couch roll is herein shown as composed of a plurality of longitudinally extending lag-strips 10 which may be of any suitable material but are preferably of wood. Each strip is supported iatwise upon alined flattened portions of the spiders and may be securedthereon in any suitable manner not herein necessary more fully to describe. The roll is provided exteriorly of said annular series of lag-strips with al suitable covering of' some preferably fibrous or soft spongy material such, for example, as felt. I have indicated such a covering at 11 in Figs. 1 and 2. Said material may be of any suitable permeable nature. I have employed the word permeable in a broad sense as obviously the surface may be perforated or otherwise suitably formed or provided with openings for the passage of the water or other liquid. The said covering for example may be of the character disclosed in Patent No. 1,173,785, granted to me February 29, 1916, wherein permeable material, ordinarily felt, in strip form is folded about a binding wire and with its edges directed outward and provided with transverse slits or scorings at intervals, is wound helically around the roll so as to form a permeable, cylindrical surface by the succession of fabric edges tightly wound and compressed against each other upon the core.

I contemplate the provision of means for creating suction through the surface of the couch roll. lVliile this may be done in any suitable manner I preferably so forni the lag-strips 10 as by inwardly beveling or tapering their lateral edges, as to provide suction chambers 12 between adjacent lagstrips. Said suction chambers are herein represented as being' triangular in crosssection and as extending substantially the I provide a suitable bottom for each of said suction chambers 12 and herein for that purpose have represented sheet metal strips 13 of galvanized iron or other suitable material, the edges thereof being inserted in kerfs 14 formed in the lateral edgesof the lag-strips other liquid to the suction chambers 1Q, I

lthereof to the suction chambers.

may provide each of the lag-strips 10 or certain of them, with suitably shaped passages 1l of any suitable length and extending through said lags from the outer surface Said passages may extend substantially the entire length of the lag-strips or be interrupted at suitable intervals so as not unduly to weaken said lag-strips.

At one or both ends of the couch roll and as herein indicated at both ends thereof, I

rovide suitable ring or disk-like members, iierein indicated at 15 and preferably formed of metal such, for example, as brass. The

said .disks or rings may be secured in any suitable manner to the endspiders 6, 7 as, for example, by screws 1G so that they rotate with the couch roll to which a movement of rotation islimparted in any suitable manner not herein necessary more fully to describe.

Each of said disks or rings 15 is provided with one or more openings or interruptions extending therethrough such, for example, as indicated at 17 whereby water or other liquid drawn by suction through the felt or other covering and through the suction chambers of the roll, may be distributed in any suitable manner.

I contemplate the provision of preferably stationary means cooperating with said disks or rings 15 and. through which the water or other liquid may be drawn by suction and discharged. For this purpose I have herein represented hollow rings or annular chambers 18 herein shown as having open bases 19 which are in communication with the suction chambers 12. Preferably the plates 15 `are provided with guiding annular flanges 21 for the reception of said rings or annular chambers. Thus, in the rotation of the couch roll the relative vpositioning of the rotating portions of said roll with respect to the stationary rings or chambers 18, is preserved. The said rings or annular chambers 18 may be of any suitable material such, for example, as castiron and each of them is provided with a suitable discharge opening indicated at Q2 which may be threaded, if desired, for the reception of a preferably flexible pipe or hose connected to some suitable source of suction. If desired, any suitable couplingmay be provided between said pipe or hose and the rings or chambers 18.

Owing to the fact that a condition of relative rotation exists between the rings or annular chambers 18 and the couch roll proper, I provide means to permit a slight relative yielding of said parts because of superficial irregularities or fo'r other' reasons. Inasmuch as in the disclosed embodi-l ment of the invention the rings or annular chambers 18 are stationary while the couch roll rotates, I haveherein represented'suitable yokes or frames 23 at opposite ends of the roll and herein shown as having annular portions at Q4 encircling the bearings 2 andf 80 3 of the roll. Said yokes may be secured in any suitable manner to the bea-rings 2, 3 or to the supporting beams 4, 5 thereof.

I provide each of the rings or annular chambers 18 with a plurality of guidin `86 pins 25 here shown as two in number an which extend through suitable openings 26 yokes.- Between the yokes 23 and the ringsl or annular chambers 7 8, I provide any suit- 3, able yielding means, as, for example', coiled springs 27 which tend normally to hold the rings or annular chambers 18 in close relation to the rings or disks 15 but pemitfi slight yielding thereof owing to irregularities in the meeting surfaces or for other purposes.

My invention is not limited to the specific embodiment of means herein representedalio The suction chambers between the lags may be otherwise formed and it is not essential that lag-strips be employed as the roll may have any suitable surface which may be so modified as to form suitable suction chamwl bers. My invention may also be embodied in a roll not having a felt or like surface inasmuch as any surface material may be employed having provisions for permittin suction therethrough of water or other liqui depending upon the use to which the roll is put. When there is employed, however, a form of covering similar to that shown in my prior patent aforesaid, because of the` presence of the helical grooves in which the" 115 binding wires are seated, and also the presence of the transverse slits, if the latter are employed, the suction is especially effective in withdrawing the water. The latter aslit collects on the surface of the roll tends'ZO quickly to diffuse throughout the felt and to come within the influence of the suction in one or more of the numerous and widely, scattered suction passages 12 and 14.

Assuming that the roll be used in the man-M25 ufacture of paper or pulp, it will be understood from the foregoing description that the water or other liquid or a portion thereof is drawn by suction applied to the pipes or' hose as described, in such manner vas td3i130 draw said Water or liquid through the felt or like covered surface and into the suction chambers 12 and thence longitudinally thereof into the hollow rings or annular chambers 18.

Having thus described one illustrative embodiment of my invention, l desire it to be understood that although specific terms are employed they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims.

l. A roll having a permeable surface, a supporting body .therefor having` longitudinally extending suction chambers, perforated rings at the ends of said roll, relatively stationary annular' chambers mounted upon said ring, means for yieldingly supporting said annular chambers, and means for applying suction to said chambers.

Q. A roll provided with a permeable surface 11, a lag-strip shell 10 providing chambers 12, and a relatively stationary annular chamber 18 in communication with said suction chambers 12.

8. A roll provided with a permeable surface 11, a lag-strip shell 10 providing'chambers 12, a relatively stationary annular chamber 18 in communication with said suction chambers 12, and yielding supports 27 for said annular chamber 18.

4. A roll provided with a permeable surface comprising strip material wound spirally about said roll, a supporting shell therefor composed of lag strips spaced to provide longitudinal suction chambers, suction passages extending transversely through said lag strips and connecting said suction chambers with the under side of said permeable surface, and means for applying suction to said chambers.

5. A roll provided with a permeable 'surface comprising strip material wound spirally about said roll, a supporting shell therefor, suction passages arranged both longitudinally and transversely on said shell and communicating each with the under side of said permeable surface.

6. A roll provided with a permeable surface, a supporting body therefor having suction passages communicating with said permeable surface, said passages terminating in the end of the roll, a stationary suction chamber at the end of the roll and simultaneously communicating with all of said suction passages, and means for creating suction in said chamber.

7, A roll having a permeable surface, a

'yieldingly supporting said chamber, and

means for applying suction to saidchamber.

9. A roll having a permeable surface, one or more suction passages communicating therewith, an end having a flat surface through which said passage or passages eX- tend, a fixed suction chamber having a flat open face in sliding engagement with said end, and means for yieldingly pressing` said suction chamber against said end to inaintain communication between the same and all of said suction passage or passages during rotation of said roll, and means fo creating suction in said chamber.

10. A roll having a support, a permeable surface comprising strip material wound spirally around said support, means for applying suction through said support to said permeable surface, and means for withdrawing the liquid.

1l. A roll having a support, a permeable surface having helical water conveying slits, and means for applying suction through said support to the under side of said permeable surface.

12. A roll having a support, a permeable surface thereon secured by spirally arranged binding wires, said surface being transversely slit, and means for applying suction to the under side of said surface vthrough said support.

1S. A roll having a supporting shell com posed of lag strips spaced to provide longitudinal. suction chambers, a permeable surface for said roll comprising strips of permeable fabric wound thereon, and means for applying suction to said chambers.

In testimony whereof, I have signed my name to this specication, in the presence of two subscribing witnesses.

ED'WARD V. PHELPS.

Vitnesses:

GRACE M. PHELrs, M. J. RnNoLDs.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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